Density dependence of the symmetry energy and the nuclear equation of state: A Dynamical and Statistical model perspective

Abstract

The density dependence of the symmetry energy in the equation of state of isospin asymmetric nuclear matter is of significant importance for studying the structure of systems as diverse as the neutron-rich nuclei and the neutron stars. A number of reactions using the dynamical and the statistical models of multifragmentation, and the experimental isoscaling observable, is studied to extract information on the density dependence of the symmetry energy. It is observed that the dynamical and the statistical model calculations give consistent results assuming the sequential decay effect in dynamical model to be small. A comparison with several other independent studies is also made to obtain important constraint on the form of the density dependence of the symmetry energy. The comparison rules out an extremely " stiff " and " soft " form of the density dependence of the symmetry energy with important implications for astrophysical and nuclear physics studies.

16 pages, 14 figures

References in corpus (5)

• Neutron-Rich Nuclei in Heaven and Earth
• Neutron and Proton Transverse Emission Ratio Measurements and the Density Dependence of the Asymmetry Term of the Nuclear Equation of State
• Evolution of the symmetry energy of hot neutron-rich matter formed in heavy-ion reactions
• Probing the symmetry energy and the degree of isospin equilibrium
• Links Between Heavy Ion and Astrophysics

Cited by in corpus (134)

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• Shell and isospin effects in nuclear charge radii
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• Nuclear symmetry energy and the role of the tensor force
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• Measuring the Temperature of Hot Nuclear Fragments
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• Has a thick neutron skin in ${}^{208}$Pb been ruled out?
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• Microscopic calculation of the equation of state of nuclear matter and neutron star structure
• Generic Constraints on the Relativistic Mean-Field and Skyrme-Hartree-Fock Models from the Pure Neutron Matter Equation of State
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• Experimental effects on dynamics and thermodynamics in nuclear reactions on the symmetry energy as seen by the CHIMERA 4$\pi$ detector
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• Using Light Charged Particles to Probe the Asymmetry Dependence of the Nuclear Caloric Curve
• Equation of state for $\beta$-stable hot nuclear matter
• Cross-checking the symmetry energy at high densities
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• Tensor force effects and high-momentum components in the nuclear symmetry energy
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• Neutron star cooling - a challenge to the nuclear mean field
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• Imprints of Nuclear Symmetry Energy on Properties of Neutron Stars
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• Exploiting neutron-rich radioactive ion beams to constrain the symmetry energy
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